家猫对源自人类的蓝氏贾第鞭毛虫包囊和滋养体感染的易感性。
Susceptibility of domestic cats to infections with Giardia lamblia cysts and trophozoites from human sources.
作者信息
Kirkpatrick C E, Green G A
出版信息
J Clin Microbiol. 1985 May;21(5):678-80. doi: 10.1128/jcm.21.5.678-680.1985.
The object of this study was to determine the importance of domestic cats in the epidemiology of human giardiasis. Of six laboratory-reared cats inoculated with cultured Giardia lamblia trophozoites from humans, only one showed the presence of cysts in the feces, and cysts were found on only 1 of the 80 days of observation. In a second experiment, eight cats were inoculated with G. lamblia cysts isolated from a human being. Over an 8-week period of observation, two of eight cats were found to have passed cysts in their feces, one on only one day and the other on 2 days. Postmortem examination of all of the cats found to be passing G. lamblia cysts at some time during the experiments did not reveal any small-intestinal trophozoites. These results suggest that domestic cats are relatively insusceptible to G. lamblia from humans and, consequently, that cats probably are not significant reservoir hosts of Giardia spp. infective for human beings. Moreover, it appears that the Giardia spp. which parasitize cats are distinct from those of human beings.
本研究的目的是确定家猫在人类贾第虫病流行病学中的重要性。在六只接种了来自人类培养的蓝氏贾第鞭毛虫滋养体的实验室饲养猫中，只有一只粪便中出现了包囊，且在80天的观察期内仅在1天发现了包囊。在第二项实验中，八只猫接种了从一名人类分离出的蓝氏贾第鞭毛虫包囊。在8周的观察期内，八只猫中有两只被发现粪便中排出了包囊，一只仅在一天排出，另一只在两天排出。对在实验期间某个时候被发现排出蓝氏贾第鞭毛虫包囊的所有猫进行尸检，未发现任何小肠滋养体。这些结果表明，家猫对来自人类的蓝氏贾第鞭毛虫相对不易感，因此，猫可能不是对人类具有感染性的贾第虫属的重要储存宿主。此外，寄生在猫身上的贾第虫属似乎与人类的不同。
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